Mention three physical methods that can be used to differentiate between benzophenone and benzopinacol.
Would the answer be the same if I wanted to differentiate between benzophenone and benzhydrol?
Answers
About 2 gm of benzophenone was allowed to dissolve in 5 ml of ethyl alcohol with gentle warming. After all solid was completely dissolved, the test tube was filled with ethanol to the neck and one drop of glacial acetic acid was added to prevent basic cleavage of the desired product. A cork was inserted and para film was wrapped around the mouth of the test tube and kept at sunny location to complete the reaction. After four to five days white shinning crystals of benzpinacol were separate out. Chilled the test tube in an ice bath and product was collected by vacuum filtration. The crystals were dried overnight and melting point of final compound was determined by open capillary tube method. Calculate the percentage yield for product. Practical yield was found to be 40%